电缆传输定向射孔技术试验

Experimental study on novel directional perforating technology by cable transmission

唐梅荣 马兵 刘顺 王广涛 王蓓 窦金明

TANG Meirong MA Bing LIU Shun WANG Guangtao WANG Bei DOU Jinming

长庆油田公司油气工艺研究院，陕西西安　710021 中油测井有限公司长庆事业部，陕西西安　710021

Oil & gas Technology Research Institute, Changqing Oilfield Company, Xi’an 710021, China

长庆油田定向井井斜角变化范围大，现有的定向射孔技术无法满足施工要求，且均需油管传输射孔，施工效率低，对井斜角要求较高，工艺适应性差，为此需要研究新型定向射孔技术。分析认为制约定向射孔工艺适应性和效率的核心因素是油管传输工艺，取代油管传输是新技术研究的关键。研发了定位器，形成了“定位器定位+陀螺仪定向+电缆传输”新型定向射孔技术，该技术以定位器为基准，实现定深度、定方向，全程使用电缆起下工具。现场试验80余井次，施工成功率100%，作业周期缩短了75%，并适用于全部定向井。该技术适用于井斜角在15°~25°间的定向井，可进一步推广应用。

As the deviation angle of the deviation wells in Changqing Oilfield distributes with a large region, the current directional perforation technique can not satisfy with the need. Besides, the directional perforation techniques need to be transmitted by tubing, indicating the low operation efficiency, high deviation angle demand, and poor process adaptability. Through the analysis on the factors affecting the adaptability and efficiency of directional perforation technique, it is found that the tubing transmission is the key factor, and replacing it is the core of any new techniques. The new directional perforating technology is developed, which is "locator positioning + gyro directional + cable transmission". The technology takes the locator as a benchmark, and realizes setting the depth and the direction, using cable to trip tools for the whole process. The novel technique was tested on 80 field wells, with the success ratio of 100%, period decrease by 75%, and adaption to all directional wells. Therefore, the technology fills the directional perforating technology blank of deviation angle between 15°and 25°.